{"total":11,"items":[{"citing_arxiv_id":"2605.21582","ref_index":61,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Multipositivity Constrains the Chiral Lagrangian","primary_cat":"hep-th","submitted_at":"2026-05-20T18:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Multipositivity bounds derived from planar tree-level scattering amplitudes constrain Wilson coefficients of the chiral Lagrangian from below by the chiral anomaly.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.21584","ref_index":133,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Wave-optics gravitational wave lensing in modified gravity","primary_cat":"gr-qc","submitted_at":"2026-05-20T18:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":8.0,"formal_verification":"none","one_line_summary":"In a curvature-coupled propagation framework for modified gravity, gravitational-wave lensing in wave optics shows persistent infrared interactions that prevent the amplification factor from approaching unity at zero frequency, requiring an interacting Green function and partial-wave treatment.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Dalang, G. Cusin, and M. Lagos, Phys. Rev. D105, 024005 (2022), arXiv:2104.10119 [gr-qc]. [130] J. F. Donoghue, Phys. Rev. D50, 3874 (1994), arXiv:gr- qc/9405057. [131] C. P. Burgess, Living Rev. Rel.7, 5 (2004), arXiv:gr- qc/0311082. [132] X. O. Camanho, J. D. Edelstein, J. Maldacena, and A. Zhiboedov, JHEP02, 020 (2016), arXiv:1407.5597 [hep-th]. [133] S. Endlich, V. Gorbenko, J. Huang, and L. Senatore, JHEP09, 122 (2017), arXiv:1704.01590 [gr-qc]. [134] R. Nair, S. Perkins, H. O. Silva, and N. Yunes, Phys. Rev. Lett.123, 191101 (2019), arXiv:1905.00870 [gr-qc]. [135] N. Sennett, R. Brito, A. Buonanno, V. Gorbenko, and L. Senatore, Phys. Rev. D102, 044056 (2020), arXiv:1912.09917 [gr-qc]. [136] E."},{"citing_arxiv_id":"2605.20319","ref_index":30,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"The Equivalence Principle at High Energies Completes the Spectrum","primary_cat":"hep-th","submitted_at":"2026-05-19T18:00:00+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Tree-level gravitational scattering under the equivalence principle mandates single-particle states in all irreducible representations constructible from a single seed charge, with equal interaction strengths.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.00089","ref_index":7,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"On the Asymptotic Causal Structure in Gravitational EFTs","primary_cat":"hep-th","submitted_at":"2026-04-30T18:00:00+00:00","verdict":"ACCEPT","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"In D>4, gravitational EFTs with higher-derivative operators allow asymptotic superluminality around black holes, but in D=4 the asymptotic causal structure is identical to Schwarzschild and insensitive to corrections.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"spective, causality is controlled not solely by the spacetime metric, but by the characteristic structure of the EFT [6]. It then becomes a meaningful and non-trivial question whether such corrections can generate measurable asymptotic time advances, allowing signals to reach future null infinity earlier than in the Schwarzschild background. This question was the original motivation behind the analysis of Ref. [7], which inves- tigated whether the propagation of a photon or a graviton in a shock-wave background can exhibit an asymptotic time advance in the presence of higher-derivative interactions. Since then, a number of works [8-24] have employed related ideas and similar backgrounds to study time delays in gravitational EFTs. In this work, we reconsider this question by analysing the asymptotic causal structure"},{"citing_arxiv_id":"2604.24115","ref_index":39,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Photon Surfaces in Higher-Curvature Gravity: Implications for Quasinormal Modes and Gravitational Lensing","primary_cat":"gr-qc","submitted_at":"2026-04-27T07:11:39+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Higher-curvature EFT terms modify the photon sphere radius, critical impact parameter, and strong deflection coefficients, providing sensitive probes for constraints on quantum gravity effects via lensing and QNM spectra.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Senatore, An effective formalism for testing extensions to General Relativity with gravitational waves, JHEP09, 122, arXiv:1704.01590 [gr-qc]. [37] W. Israel, Event horizons in static vacuum space-times, Phys. Rev.164, 1776 (1967). [38] J. Bad' ıa and E. F. Eiroa, Gravitational lensing by a Horndeski black hole, Eur. Phys. J. C77, 779 (2017), arXiv:1707.02970 [gr-qc]. [39] X.-H. Jin, Y.-X. Gao, and D.-J. Liu, Strong gravitational lensing of a 4-dimensional Einstein-Gauss-Bonnet black hole in homogeneous plasma, Int. J. Mod. Phys. D29, 2050065 (2020), arXiv:2004.02261 [gr-qc]."},{"citing_arxiv_id":"2604.22009","ref_index":125,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Black Hole Response Theory and its Exact Shockwave Limit","primary_cat":"hep-th","submitted_at":"2026-04-23T18:55:30+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Black hole response theory in WQFT exactly reproduces the Aichelburg-Sexl shockwave metric, geodesics, and the transfer matrix for gravitational-wave scattering off it via post-Minkowskian resummation.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"background propagator while the higher-point responses act as effective interaction vertices. Coupling this response theory to a lighter secondary worldline then yields a systematic expansion in the small mass ratio, in which annSF computation requires response functions only up to(n+ 1)-point order. Similar steps of establishing a QFT framed SF expansion were undertaken in [122-124] for the worldline approach and in [125] for the scattering amplitude framework. Yet, concrete results could only be achieved upon expanding inG, thereby effectively reproducing the PM expansion simply in a different setup. In this paper we develop such a black hole-response formalism within WQFT and use it to define a response-based effective theory adapted to the SF expansion. As a first concrete application - providing exact inGresults - we specialise to the"},{"citing_arxiv_id":"2604.07332","ref_index":25,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Theoretical and Observational Bounds on Dynamical Chern-Simons Gravity as an Effective Field Theory","primary_cat":"hep-th","submitted_at":"2026-04-08T17:49:22+00:00","verdict":null,"verdict_confidence":null,"novelty_score":null,"formal_verification":null,"one_line_summary":null,"context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Remmen,Quantum Gravity Constraints from Unitarity and Analyticity,Phys. Rev. D93(2016) 064076 [1509.00851]. [23] Y. Hamada, R. Kuramochi, G.J. Loges and S. Nakajima,On (scalar QED) gravitational positivity bounds,JHEP05(2023) 076 [2301.01999]. [24] A. Gruzinov and M. Kleban,Causality Constrains Higher Curvature Corrections to Gravity, Class. Quant. Grav.24(2007) 3521 [hep-th/0612015]. [25] X.O. Camanho, J.D. Edelstein, J. Maldacena and A. Zhiboedov,Causality Constraints on Corrections to the Graviton Three-Point Coupling,JHEP02(2016) 020 [1407.5597]. [26] S. Caron-Huot, Y.-Z. Li, J. Parra-Martinez and D. Simmons-Duffin,Causality constraints on corrections to Einstein gravity,JHEP05(2023) 122 [2201.06602]. [27] G.T. Horowitz, M. Kolanowski, G."},{"citing_arxiv_id":"2603.15755","ref_index":16,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Negative running of gravitational positivity","primary_cat":"hep-th","submitted_at":"2026-03-16T18:00:11+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Non-minimal three-point interactions induce negative one-loop running of Wilson coefficients in gravitational EFTs, yet graviton loops generate positive IR contributions that dominate the bounds after smearing if the species number is bounded.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2512.13780","ref_index":2,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Positivity with Long-Range Interactions","primary_cat":"hep-th","submitted_at":"2025-12-15T19:00:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Defines IR-finite amplitudes M_E that preserve analyticity and unitarity to derive positivity bounds on EFTs including electromagnetism and gravity in D=4.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"C0(q) = ˆc2,0G π \" − q2 30M 2 181 + 60 log E 2/M2\u0001\u0001 log \u0012 M 2 q2 + 1 \u0013 −4 log E 2/M2\u0001 − 533q2 20M 2 − 136 15 + 2 q2 M 2 Li2 \u0012 − M 2 q2 \u0013 − 21q2 2M 2 log µUV/M2\u0001 # . (C.11) References [1] A. Adams, N. Arkani-Hamed, S. Dubovsky, A. Nicolis, and R. Rattazzi, \"Causality, analyticity and an IR obstruction to UV completion,\"JHEP10(2006) 014, hep-th/0602178. [2] X. O. Camanho, J. D. Edelstein, J. Maldacena, and A. Zhiboedov, \"Causality Constraints on Corrections to the Graviton Three-Point Coupling,\"JHEP02(2016) 020,1407.5597. [3] T. N. Pham and T. N. Truong, \"Evaluation of the Derivative Quartic Terms of the Meson Chiral Lagrangian From Forward Dispersion Relation,\"Phys. Rev. D31(1985) 3027. [4] M. R. Pennington and J."},{"citing_arxiv_id":"2512.02338","ref_index":123,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Leading effective field theory corrections to the Kerr metric at all spins","primary_cat":"gr-qc","submitted_at":"2025-12-02T02:16:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Numerical solutions show that leading effective-field-theory corrections to the Kerr metric grow with spin and are largest near extremality.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"with gravitational-wave observations, especially since, as our results indicate, rapidly rotating BHs are particularly sensitive probes of new physics. The methods employed in this Letter can be gener- alized to compute corrections involving eight or more derivatives, which provide the leading-order corrections to the Kerr metric in certain cases, such as when the UV completion is supersymmetric [123], or when the EFT is isospectral [64]. Acknowledgments.P.F. thanks Kelvin Lam for useful correspondence, and Bruno Valeixo Bento, Astrid Eich- horn, Benjamin Knorr and Simon Maenaut for valuable comments on a first draft. This work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Re- search Foundation) under Germany's Excellence Strat-"},{"citing_arxiv_id":"2412.19745","ref_index":15,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"IR side of bounds on Theories with Spontaneously Broken Lorentz Symmetry","primary_cat":"hep-th","submitted_at":"2024-12-27T17:14:14+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"The analysis shows that analyticity bounds in Lorentz-broken theories require gapped excitations to propagate slower than gapless ones at low momenta relative to the mass gap.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null}],"limit":50,"offset":0}